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Crown Tri Metal I
Crown Tri Metal II
Crown Tri-Metal III
Crown Tunnessen 1 Patent
Crown Tunnessen 2 Patent
  Crown Tri-Metal IV.JPG - CROWN TRI-METAL IV - Crown tri-metal face lamp, brass collar, copper font and bottom, lid stamped PAT. MAY 26, 1908 & APRIL 20, 09, lamp stands 2 3/4 in. to lid, base dia. 1 7/8 in., bottom marked “CROWN” TRADE MARK REG’D U. S. PAT. OFFICE centered on base (not circular pattern)  
Crown Tri-Metal IV Marking
Demmler Bros
Demmler Bros. II
Demmler Bros. II Marking
Demmler Bros. Front Side

Crown Tri-Metal IV | CROWN TRI-METAL IV - Crown tri-metal face lamp, brass collar, copper font and bottom, lid stamped PAT. MAY 26, 1908 & APRIL 20, 09, lamp stands 2 3/4 in. to lid, base dia. 1 7/8 in., bottom marked “CROWN” TRADE MARK REG’D U. S. PAT. OFFICE centered on base (not circular pattern) Download Original Image
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